[Stretch], CO #5, 6, 7, 8, 9 Write unit tests for 'Команда' Admin page

[ValDekh]

test for creating team member only with required fields
test for creating team member with all possible fields (all social medias as well)
test for editing team member
check text amount restrictions in inputs
check also functionality that when required fields are the same then existing news should be updated instead of created
For file uploader use image from assets (folder for_tests)

Component to put tests on:

TeamModal.component.tsx
TeamLink.component.tsx
TeamPage.component.tsx
Mock all needed requests ( create, update, get ext.)